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Chapter 8. Verifying your IdM and AD trust configuration using IdM Healthcheck

Learn more about identifying issues with a trust between Identity Management (IdM) and Active Directory (AD) by using the Healthcheck tool.

Prerequisites

  • The Healthcheck tool is only available on RHEL 8.1 or newer

8.1. IdM and AD trust Healthcheck tests

The Healthcheck tool includes several tests for testing the status of the trust between Identity Management (IdM) and Active Directory (AD).

To see all trust tests, run ipa-healthcheck with the --list-sources option: 

# ipa-healthcheck --list-sources
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You can find all trust-related tests under the ipahealthcheck.ipa.trust source:

IPATrustAgentCheck
This test checks the SSSD configuration if the current host is configured as a trust agent. For each domain in /etc/sssd/sssd.conf where id_provider=ipa ensure that ipa_server_mode is True.
IPATrustDomainsCheck
This test checks if the trust domains match SSSD domains by comparing the list of domains in sssctl domain-list with the list of domains from ipa trust-find excluding the IdM domain.
IPATrustCatalogCheck

This test resolves an AD user, Administrator@REALM. This populates the AD Global catalog and AD Domain Controller values in sssctl domain-status output.

For each trust domain look up the user with the ID of the SID + 500, that is the administrator ID, and then check the output of sssctl domain-status <domain> --active-server to ensure that the domain is active.

IPAsidgenpluginCheck
This test verifies that the sidgen plugin is enabled in the IdM 389-ds instance. The test also verifies that the IPA SIDGEN and ipa-sidgen-task plugins in cn=plugins,cn=config include the nsslapd-pluginEnabled option.
IPATrustAgentMemberCheck
This test verifies that the current host is a member of cn=adtrust agents,cn=sysaccounts,cn=etc,SUFFIX.
IPATrustControllerPrincipalCheck
This test verifies that the current host is a member of cn=adtrust agents,cn=sysaccounts,cn=etc,SUFFIX.
IPATrustControllerServiceCheck
This test verifies that the current host starts the ADTRUST service in ipactl.
IPATrustControllerConfCheck
This test verifies that ldapi is enabled for the passdb backend in the output of net conf list.
IPATrustControllerGroupSIDCheck
This test verifies that the admins group’s SID ends with 512, which is the Domain Admins' RID.
IPATrustPackageCheck
This test verifies that the trust-ad package is installed if the trust controller and AD trust are not enabled.

8.2. Screening the trust with the Healthcheck tool

Follow this procedure to run a standalone manual test of an Identity Management (IdM) and Active Directory (AD) trust health check using the Healthcheck tool.

Procedure

  • Enter: 

    # ipa-healthcheck --source=ipahealthcheck.ipa.trust --failures-only
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    • The --source=ipahealthcheck.ipa.trust option ensures that IdM Healthcheck only performs the trust tests.

Successful test displays empty brackets: 

# ipa-healthcheck --source=ipahealthcheck.ipa.trust
[]
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Note

Run these tests on all IdM servers when trying to find an issue.

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